*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{min-height:100vh;min-width:320px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}:root{--primary: #818cf8;--primary-dark: #6366f1;--bg-dark: #09090b;--bg-card: #18181b;--bg-input: #27272a;--text-primary: #f8fafc;--text-secondary: #a1a1aa;--border: #27272a;--success: #10b981;--error: #ef4444;--radius: 16px;--glass-bg: rgba(24, 24, 27, .6);--glass-border: rgba(255, 255, 255, .05)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-dark);color:var(--text-primary);line-height:1.6}.avatar{border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;flex-shrink:0;-webkit-user-select:none;user-select:none;line-height:1}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:max(20px,env(safe-area-inset-top)) 20px max(20px,env(safe-area-inset-bottom));background:linear-gradient(135deg,var(--bg-dark) 0%,#1a1a2e 100%)}.auth-card{background:var(--bg-card);padding:40px;border-radius:var(--radius);width:100%;max-width:400px;box-shadow:0 25px 50px -12px #00000080}.auth-card h1{font-size:28px;margin-bottom:8px;background:linear-gradient(135deg,var(--primary) 0%,#a855f7 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-card .subtitle{color:var(--text-secondary);margin-bottom:32px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:var(--text-secondary);font-size:14px}.form-group input{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:16px;transition:border-color .2s,box-shadow .2s}.form-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f133}.btn-primary{width:100%;padding:14px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 20px #6366f14d}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.error-message{background:#ef44441a;border:1px solid var(--error);color:var(--error);padding:12px;border-radius:8px;margin-bottom:20px;font-size:14px}.auth-link{text-align:center;margin-top:24px;color:var(--text-secondary)}.auth-link a{color:var(--primary);text-decoration:none;font-weight:500}.app-shell{display:flex;height:100vh;width:100vw;overflow:hidden;background:var(--bg-dark)}.sidebar{width:320px;flex-shrink:0;display:flex;flex-direction:column;background:var(--bg-card);border-right:1px solid var(--border);height:100vh}.main-content{flex:1;height:100vh;display:flex;flex-direction:column;background:var(--bg-dark);position:relative}.room-list-container{display:flex;flex-direction:column;height:100%}.main-layout{display:flex;flex-direction:column;flex:1;overflow-y:auto;padding:12px;gap:16px}.conversations-panel{flex:1;display:flex;flex-direction:column}.friends-side-panel{display:flex;flex-direction:column}.friends-panel h3{margin-bottom:12px;font-size:16px}.friend-search input{width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:14px;margin-bottom:10px}.friend-search input:focus{outline:none;border-color:var(--primary)}.search-result-item{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;margin-bottom:6px;font-size:14px}.friend-item{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--bg-card);border-radius:8px;margin-bottom:6px;font-size:14px}.friend-item-clickable{cursor:pointer;transition:background .15s,transform .1s}.friend-item-clickable:hover{background:#7c3aed26;transform:translate(2px)}.friend-item-clickable:active{transform:scale(.98)}.friend-item-loading{opacity:.6;pointer-events:none}.friend-chat-icon{margin-left:auto;opacity:0;font-size:14px;transition:opacity .15s}.friend-item-clickable:hover .friend-chat-icon{opacity:.7}.avatar-with-status{position:relative;flex-shrink:0}.status-dot-badge{width:10px;height:10px;border-radius:50%;position:absolute;bottom:-1px;right:-1px;border:2px solid var(--bg-card)}.status-dot-badge.online{background:var(--success)}.status-dot-badge.offline{background:var(--text-secondary)}.status-dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex-shrink:0}.status-dot.online{background:var(--success)}.status-dot.offline{background:var(--text-secondary)}.friend-name{font-weight:500}.empty-text{color:var(--text-secondary);font-size:13px;padding:12px 0}.btn-small{padding:4px 12px;font-size:12px;border:none;border-radius:6px;cursor:pointer;font-weight:600;color:#fff;width:auto}.btn-small.btn-success{background:var(--success);padding:4px 12px;font-size:12px;border-radius:6px}.btn-small.btn-danger{background:var(--error);padding:4px 12px;font-size:12px;border-radius:6px}.btn-small.btn-primary{background:var(--primary)}.friend-requests{margin-bottom:20px;padding:12px;background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border)}.friend-requests h4{margin-bottom:10px;font-size:14px;color:var(--text-secondary)}.friend-request-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0}.friend-info{display:flex;align-items:center;gap:8px}.friend-actions{display:flex;gap:6px}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border)}.header h1{font-size:24px}.header-actions{display:flex;align-items:center;gap:16px}.username{color:var(--text-secondary)}.friends-toggle-btn{display:none;align-items:center;gap:6px}.friends-drawer-overlay{display:none}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-secondary);padding:8px 16px;border-radius:8px;cursor:pointer;transition:all .2s}.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}.create-room-btn{width:100%;padding:16px;background:var(--bg-card);border:2px dashed var(--border);border-radius:var(--radius);color:var(--text-secondary);font-size:16px;cursor:pointer;transition:all .2s;margin-bottom:16px}.create-room-btn:hover{border-color:var(--primary);color:var(--primary)}.create-room-form{display:flex;gap:12px;margin-bottom:16px}.create-room-form input{flex:1;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:16px}.create-room-form .btn-primary{width:auto;padding:12px 24px}.room-item{display:flex;align-items:center;gap:14px;padding:16px;background:var(--bg-card);border-radius:var(--radius);margin-bottom:12px;text-decoration:none;color:inherit;transition:transform .2s,box-shadow .2s}.room-item .room-info{flex:1;min-width:0}.room-item:hover{transform:translate(4px);box-shadow:0 4px 12px #0003}.room-info h3{margin-bottom:4px}.last-message{color:var(--text-secondary);font-size:14px;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.room-type{font-size:12px;padding:4px 8px;background:var(--bg-input);border-radius:4px;color:var(--text-secondary)}.chat-container{height:100%;display:flex;flex-direction:column;width:100%}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background:var(--glass-bg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:100;gap:8px}.chat-header-left{display:flex;align-items:center;gap:12px;min-width:0;flex:1}.chat-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:18px}.chat-header-right{display:flex;align-items:center;gap:8px;flex-shrink:0}.btn-header{font-size:14px;padding:6px 12px;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}.btn-icon{flex-shrink:0}.back-btn{color:var(--text-secondary);text-decoration:none;transition:color .2s;flex-shrink:0}.back-btn:hover{color:var(--primary)}.connection-status{font-size:14px;flex-shrink:0}.connection-status.online{color:var(--success)}.connection-status.offline{color:var(--error)}.messages-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.date-separator{display:flex;align-items:center;gap:12px;margin:8px 0;font-size:12px;color:var(--text-secondary);-webkit-user-select:none;user-select:none}.date-separator:before,.date-separator:after{content:"";flex:1;border-top:1px solid var(--border)}.date-separator span{white-space:nowrap;padding:0 4px}.message-row{display:flex;align-items:flex-end;gap:8px}.message-row.own{justify-content:flex-end}.avatar-spacer{width:30px;flex-shrink:0}.message{max-width:70%;padding:12px 16px;background:var(--bg-card);border-radius:var(--radius);border-bottom-left-radius:4px}.message.grouped{margin-top:-8px;padding-top:6px;border-radius:4px var(--radius) var(--radius) 4px}.message.own.grouped{border-radius:var(--radius) 4px 4px var(--radius)}.message.own{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-bottom-left-radius:var(--radius);border-bottom-right-radius:4px}.message-header{display:flex;justify-content:space-between;gap:16px;margin-bottom:4px;font-size:12px}.sender{font-weight:600}.time{color:var(--text-secondary)}.message.own .time{color:#ffffffb3}.message-content{word-wrap:break-word}.messages-container::-webkit-scrollbar,.search-results::-webkit-scrollbar,.friends-list::-webkit-scrollbar,.friends-side-panel::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track,.search-results::-webkit-scrollbar-track,.friends-list::-webkit-scrollbar-track,.friends-side-panel::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb,.search-results::-webkit-scrollbar-thumb,.friends-list::-webkit-scrollbar-thumb,.friends-side-panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.messages-container::-webkit-scrollbar-thumb:hover,.search-results::-webkit-scrollbar-thumb:hover,.friends-list::-webkit-scrollbar-thumb:hover,.friends-side-panel::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.typing-indicator{padding:8px 20px;color:var(--text-secondary);font-size:14px;font-style:italic}.message-form{display:flex;gap:12px;padding:16px 20px max(16px,env(safe-area-inset-bottom));background:var(--bg-card);border-top:1px solid var(--border)}.message-form input{flex:1;padding:14px 18px;background:var(--bg-input);border:1px solid var(--border);border-radius:24px;color:var(--text-primary);font-size:16px}.message-form input:focus{outline:none;border-color:var(--primary)}.message-form button{padding:14px 28px;background:var(--primary);color:#fff;border:none;border-radius:24px;font-size:16px;font-weight:600;cursor:pointer;transition:background .2s}.message-form button:hover{background:var(--primary-dark)}.message-form button:disabled{opacity:.5;cursor:not-allowed}.loading,.empty-state,.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;color:var(--text-secondary);text-align:center}.loading-screen{height:100vh;font-size:18px}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:var(--bg-card);width:90%;max-width:500px;border-radius:var(--radius);padding:24px;box-shadow:0 10px 25px #00000080;border:1px solid var(--border)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-header h3{margin:0;font-size:20px}.close-btn{background:none;border:none;color:var(--text-secondary);font-size:24px;cursor:pointer;line-height:1}.close-btn:hover{color:var(--text-primary)}.search-input{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-size:16px;margin-bottom:16px}.search-input:focus{outline:none;border-color:var(--primary)}.search-results{max-height:300px;overflow-y:auto}.user-item{display:flex;justify-content:space-between;align-items:center;padding:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;margin-bottom:8px}.user-info{display:flex;flex-direction:column}.user-name{font-weight:600}.user-email{font-size:12px;color:var(--text-secondary)}.btn-add{padding:6px 12px;background:var(--primary);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:14px}.btn-add:hover{background:var(--primary-dark)}.btn-add:disabled{opacity:.5;cursor:not-allowed}.loading-small{text-align:center;padding:20px;color:var(--text-secondary)}.empty-results{text-align:center;padding:20px;color:var(--text-secondary);font-style:italic}.call-modal-overlay{position:fixed;inset:0;background:#000;z-index:2000;display:flex;justify-content:center;align-items:center}.call-container{position:relative;width:100%;height:100%;display:flex;justify-content:center;align-items:center}.remote-video{width:100%;height:100%;object-fit:cover}.local-video{position:absolute;border-radius:12px;object-fit:cover;box-shadow:0 4px 15px #00000080;background:#333;transition:all .3s ease}.local-video.preview{width:200px;height:150px;z-index:2}.local-video.pip{width:160px;height:120px;bottom:24px;right:24px;z-index:10;border:2px solid rgba(255,255,255,.2)}.call-controls{position:absolute;bottom:40px;left:0;right:0;display:flex;justify-content:center;z-index:20}.incoming-controls{background:#000c;padding:24px;border-radius:16px;text-align:center}.incoming-controls h3{margin-bottom:20px;color:#fff}.active-controls{display:flex;gap:20px;align-items:center}.btn-success{background:var(--success);color:#fff;padding:12px 32px;border-radius:24px;border:none;font-weight:600;cursor:pointer;font-size:16px;margin-right:12px}.btn-danger{background:var(--error);color:#fff;padding:12px 32px;border-radius:24px;border:none;font-weight:600;cursor:pointer;font-size:16px}.btn-danger-round{background:var(--error);color:#fff;width:64px;height:64px;border-radius:50%;border:none;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px #ef444466}.status-badge{background:#0009;padding:6px 16px;border-radius:20px;color:#fff;font-size:14px;position:absolute;top:24px;left:50%;transform:translate(-50%)}.error-banner{position:absolute;top:24px;background:var(--error);color:#fff;padding:10px 20px;border-radius:8px;z-index:100;box-shadow:0 4px 12px #0000004d}@media(max-width:1024px){.room-list-container{max-width:100%}.friends-side-panel{width:240px}.chat-container{max-width:100%}}@media(max-width:768px){.main-layout{flex-direction:column}.friends-side-panel{width:100%;position:fixed;bottom:0;left:0;right:0;max-height:65vh;overflow-y:auto;z-index:500;background:var(--bg-dark);border-radius:16px 16px 0 0;border-top:1px solid var(--border);padding:16px;transform:translateY(100%);transition:transform .3s ease;box-shadow:0 -8px 30px #0006}.friends-side-panel.friends-drawer-open{transform:translateY(0)}.friends-drawer-overlay{position:fixed;inset:0;background:#00000080;z-index:499;opacity:0;pointer-events:none;transition:opacity .3s ease}.friends-drawer-overlay.visible{opacity:1;pointer-events:auto}.friends-toggle-btn{display:inline-flex}.room-list-container{padding:12px}.header{flex-direction:column;align-items:flex-start;gap:12px}.header-actions{width:100%;justify-content:space-between}.auth-card{padding:24px}.chat-container{max-width:100%}.message{max-width:85%}.last-message{max-width:180px}.create-room-form{flex-direction:column}.create-room-form .btn-primary{width:100%}.btn-small{min-height:44px;padding:8px 16px;font-size:13px;display:inline-flex;align-items:center;justify-content:center}.friend-item{padding:14px 16px}.btn-ghost{min-height:44px}.close-btn,.modal-close-btn{min-width:44px;min-height:44px;display:flex;align-items:center;justify-content:center}.back-btn{min-height:44px;display:inline-flex;align-items:center;padding:0 8px}.btn-label{display:none}.btn-header{padding:6px 10px}}@media(max-width:480px){.room-list-container{padding:8px}.chat-header{padding:10px 12px}.chat-title{font-size:16px}.message-form{padding:10px 12px;gap:8px}.message-form input{padding:10px 14px;font-size:15px}.message-form button{padding:10px 18px;font-size:15px}.messages-container{padding:12px;gap:8px}.room-item{padding:12px}.auth-card{padding:20px}.auth-card h1{font-size:22px}.modal-content,.invite-modal{width:95vw}.header h1{font-size:20px}}.invite-modal{background:var(--card-bg, #1e1e2e);border-radius:16px;padding:24px;width:380px;max-width:90vw;box-shadow:0 20px 60px #0006}.invite-modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.invite-modal-header h3{margin:0;font-size:1.2rem}.modal-close-btn{background:none;border:none;color:inherit;font-size:1.5rem;cursor:pointer;padding:0 4px;line-height:1;opacity:.6;transition:opacity .15s}.modal-close-btn:hover{opacity:1}.invite-modal-body{display:flex;flex-direction:column;align-items:center;gap:16px}.invite-qr-container{background:#fff;border-radius:12px;padding:12px;display:flex;align-items:center;justify-content:center}.invite-instruction{margin:0;font-size:.9rem;opacity:.8;text-align:center}.invite-link-row{display:flex;width:100%;gap:8px}.invite-link-input{flex:1;padding:8px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.15);background:#ffffff0f;color:inherit;font-size:.85rem;min-width:0}.invite-copy-btn{padding:8px 16px;border-radius:8px;border:none;background:#7c3aed;color:#fff;font-weight:600;cursor:pointer;white-space:nowrap;transition:background .15s}.invite-copy-btn:hover{background:#6d28d9}.invite-expiry{margin:0;font-size:.8rem;opacity:.5}.invite-loading{padding:32px 0;opacity:.7}.invite-error{color:#f87171;padding:16px 0}.join-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg, #0f0f1a)}.join-card{background:var(--card-bg, #1e1e2e);border-radius:16px;padding:40px;text-align:center;max-width:400px;width:100%;box-shadow:0 20px 60px #0000004d}.join-card h2{margin:0 0 12px;font-size:1.4rem}.join-card p{margin:0 0 20px;opacity:.8}.join-actions{display:flex;flex-direction:column;gap:10px}.join-actions .btn-primary,.join-actions .btn-ghost{display:block;text-align:center;text-decoration:none;padding:10px 20px;border-radius:8px;font-weight:600}.join-error{color:#f87171}.join-spinner{width:32px;height:32px;border:3px solid rgba(255,255,255,.15);border-top-color:#7c3aed;border-radius:50%;margin:0 auto 16px;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-primary,.create-room-btn,.room-item,.btn-ghost{transition:all .3s cubic-bezier(.4,0,.2,1)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 20px -10px var(--primary)}.room-item:hover{transform:translate(4px);background:#ffffff0d}.message{animation:popIn .3s cubic-bezier(.175,.885,.32,1.275) forwards}@keyframes popIn{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}.modal-content{animation:slideUp .4s cubic-bezier(.16,1,.3,1) forwards}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}